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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a Collection in Java?
💡 Hint: Consider grouping items together.
Question 2
Easy
Name one implementation of the List interface.
💡 Hint: Think of a dynamic-sized collection.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does a List in Java allow?
- Only unique elements
- Duplicates and ordering
- Only primitive types
💡 Hint: Think about sequences and repetitions.
Question 2
True or False: A Set in Java can contain duplicate elements.
- True
- False
💡 Hint: Consider the basic definition of a Set.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a list of integers, write a Java method that returns a Set of unique values. Discuss its advantages based on your understanding of Sets.
💡 Hint: Consider using HashSet's add() method.
Question 2
Create a generic method that reverses an array of any type. Show how generics improve the flexibility of your code.
💡 Hint: Think about how the method should handle type parameters.
Challenge and get performance evaluation